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2 years ago

9

Which option describes a similarity and a difference between isotopes of an element?

1 answer:

Brums [2.3K]2 years ago

6 0

Well I do know that they have the same atomic number, but they have a different mass number.

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Please help(15 points)

Triss [41]

Answer: because they take a lot of tie to form

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3 years ago

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A disturbance in matter that carries energy from one place to another is called

siniylev [52]

The answer you're looking for is: a wave.

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2 years ago

Complete combustion of 5.90 g of a hydrocarbon produced 19.2 g of CO2 and 5.89 g of H2O. What is the empirical formula for the h

scZoUnD [109]

$44g \ CO_{2} \ \ \ \rightarrow \ \ 12g \ C\\
19,2g \ CO_{2} \rightarrow \ \ \ x\\\\
x=\frac{19,2g*12g}{44g}\approx5,24g \ \ \ \Rightarrow \ \ n=\frac{5,24g}{12\frac{g}{mol}}\approx0,44mol\\\\\\
18g \ H_{2}O \ \ \ \rightarrow \ \ \ 2g \ H\\
5,89g \ H_{2}O \ \rightarrow \ \ y\\\\
y=\frac{5,89g*2g}{18g}\approx0,65g \ \ \ \ \Rightarrow \ \ n=\frac{0,65g}{1\frac{g}{mol}}=0,65mol\\\\\\
n_{C}:n_{H}=0,44:0,65\approx1:1\\\\
CH$

4 0

2 years ago

Write a balanced chemical equation for the standard formation reaction of solid sodium orthosilicate

Mumz [18]

Equation for the standard formation of solid sodium orthosilicate:
4 Na(s) + Si(s) + 2 O₂(g) → Na₄SiO₄(s)

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3 years ago

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Evaluate this statement: Substances are made of two or more types of elements.

wolverine [178]

A MOLECULE IS MADE OF TWO OR MORE ELEMENTS CHEMICALLY COMBINED IS KNOWN AS A COMPUND.

A MOLECULE IS MADE OF TWO ATOMS IS JUST AN ELEMENT.

A MOLECULE MADE OF TWO OR MORE ELEMENTS IS KNOWN AS A COMPUND.

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3 years ago